How to calculate dimension of a bounding box with an angle?

Hi,everyone. I really need help from you that I don't know how to calculate the dimension of bounding box with a rotated angle. I have already find out the 4 endpoints of the bounding box.(x1,y1),(x2,y2), (x3,y3),(x4,y4).But how to continue to get the length and width of the bounding box? Wish someone can help me.Thanks in advance!

Answer 1

[parth pandya]

It will help if you can provide more information and exactly what you want. But you can convert your Cartesian coordinates to polar coordinates and then again to Cartesian. It will help you.

Answer 2

[John D'Errico]

Existing code is always a better choice, if you can find it? For example, you can find minboundrect on the file exchange.

If you want to write some code yourself, you might find a few nice tricks in there anyway.

[Bingjie Mu]

Thank you!I have look though the code, and one more question: Are the results of bounding box always rectangular? Or can it be parallelogram??

[John D'Errico]

minboundrect always generates a rectangle, so right angles. However, I think I recall writing also a tool in there called minboundparallelogram.

[Bingjie Mu]

Okay, now I understand, for my code I need to use the file minboundrece.m,but what I want is the edge length of the rectangle,not the area or primeter. Could you help me how to modify this program to output the edge length?